An SIW Resonator Sensor for Liquid Permittivity Measurements at C Band

作者：Liu Changjun^*; Tong Fan

来源：IEEE Microwave and Wireless Components Letters, 2015, 25(11): 751-753.

DOI：10.1109/LMWC.2015.2479851

• Artificial neural network (ANN)
• complex permittivity
• microwave industrial application
• resonator
• substrate integrated waveguide (SIW)

This letter presents a novel substrate integrated waveguide (SIW) resonator sensor that is specifically designed to measure the complex permittivity of liquids. The resonant characteristics of the sensor are influenced by liquids through a slot opened on the top plane. The inverse problem of obtaining permittivity is solved with artificial neural network. Experiments were performed with an SIW resonator sensor designed at C band. Experimental data were reported and they agreed well to the reference values. The sensor is simple and low cost, which may be applied to permittivity measurements in applications at the industrial, scientific and medical (ISM) frequencies.

• 出版日期2015-11
• 单位四川大学